QRScanner ScanResult.scanCanceled and ScanResult.scanError never triggered on iOS

[Rocketeer007]

Describe the bug
Using the latest version of the QRScanner library (https://github.com/codenameone/QRScanner)

On iOS, when triggering a scan, the UI presents a "Cancel" button. Tapping this dismisses the scanning dialog, but does not invoke the ScanResult.scanCanceled method, so the calling code has no way to detect that the scan has been aborted with no result.

To Reproduce
Steps to reproduce the behaviour:

QRScanner.scanQRCode(new ScanResult() {
            @Override
            public void scanCompleted(String contents, String formatName, byte[] rawBytes) {Log.p("Scan completed: " + contents + " / " + formatName);}

            @Override
            public void scanCanceled() {Log.p("Scan canceled");}

            @Override
            public void scanError(int errorCode, String message) {Log.p("Scan error: " + errorCode + " / " + message);}
        });

Implement a trivial scan handler as above, and deploy it on iOS

Expected behavior

• When the Cancel button is tapped, the "Scan canceled" message should be logged
• (Ideally) If the user has denied access to the Camera, the "Scan error" message should be logged

Additional context
Checking the source, it does not appear that either scanCanceledCallback nor scanErrorCallback are ever called from iOS code.